baber/WOPTO huggingface dataset:
Patent GB-925433-A (GB)
Title: Siloxane block co-polymers
IPC: C08G77/52
Filed: 1961-08-11
Abstract: An organosiloxane block copolymer, exhibiting polymeric crystallinity at 25 DEG C., consists essentially of (A) segments consisting of repeating units of the formula R12SiO and (B) segments consisting of repeating units of the formula <FORM:0925433/IV(a)/1> wherein each R1 is a monovalent saturated or unsaturated hydrocarbon or substituted, preferably halogenated, hydrocarbon radical, each R is a monovalent hydrocarbon radical free from aliphatic unsaturation, and Z is a divalent aromatic radical selected from p-phenylene, 4,41-diphenylene, 4,41-diphenylene ether, 4,41-dimethylenebenzene and 4,41-dimethylenediphenyl ether radicals, and may be made by cocondensing (A) an organosiloxanol of the formula HO(R12SiO)nH with (B) a diol of the formula HO[Si(R)2Z(R)2SiO]yH, wherein n and y have average values of at least 10 and 1 respectively, by intimately contacting (A) and (B) in the liquid phase under conditions such that substantially no siloxane bond rearrangement takes place. The reaction is preferably effected in an inert diluent, e.g. benzene, toluene or xylene, and in the presence of a silanol condensation catalyst which exhibits no siloxane-equilibration characteristics, such as certain salts of basic amino compounds as set forth in Specification 895,091, isocyanate catalysts as described in Specification 836,954, and the oxides of Ba, Sr and Ca.  Preferably a solution of the reactants is heated, e.g. to within the range of 50 DEG  to 200 DEG C., and then the solvent is removed, followed if desired by heating the reaction mass in the solvent free state.  The catalyst can be removed by precipitating the copolymer by adding a solvent which is compatible with the first solvent but incompatible with the copolymer.  In a typical example (1) benzene and a benzene solution of tetramethylguanidine di-2-ethylhexoate were added to a mixture of <FORM:0925433/IV(a)/2> and a hydroxyl-terminated dimethylsiloxane, and the whole mixture was refluxed for 6 1/2 hours, after which the copolymer was separated by precipitation, dissolved in benzene and cast into a film.  The products can be converted into silicone rubbers, with or without conventional fillers and additives, by exposure to ionizing radiation, or if they contain alkenyl radicals by organic peroxides or azo compounds, sulphur or sulphur-containing compounds.  Specification 916,135 also is referred to.
Patent GB-1204045-A (GB)
Title: Improvements in rollers
Inventor: NAKANISHI YOSHITAKA
IPC: F16C13/00
Filed: 1968-06-21
Abstract: 1,204,045. Rollers; bearings. Y. NAKANISHI. 21 June, 1968 [24 June, 1967; 26 June, 1967], No. 29638/68. Headings F2A and F2U. A roller comprises two complementary circular solid roller halves 40, 40h, Fig. 7 with flat sides each half having an annular groove opening into the circumference of a centre aperture, the annular grooves defining a race for ball bearings 5 disposed between the annular groove and a centre shaft 10. The roller may have a peripheral groove (3), Fig. 1 (not shown), which runs on a rail, the roller being supported in a frame (16). A roller half may be formed with integral pins which engage complementary holes in the other half so that the assembly can be secured by deforming the heads of the pins. The annular groove may have radial partitions (6a), Fig. 6 (not shown) and one or both annular grooves may have a re-entrant lip which retains the balls in phase during assembly. The outer groove may have a peripheral plastics tyre and bushes 15 may be fitted. The rollers may be of metal or plastics.
Patent GB-1000157-A (GB)
Title: Method and apparatus for measuring alternating electrical energy
IPC: G01R21/00
Filed: 1962-08-02
Abstract: 1,000,157. Power measurement; energy. J LEUSCHER . Aug. 2, 1962 [Aug. 11,1961], No. 29669/62. Headings G1Q and G1U In apparatus for measuring alternating electrical energy from test voltages representing load voltage u and load current i; direct biasing volt -. ages k 1 , k 2  exceeding the maximum amplitudes of the test signals are superimposed thereon to develop pulsating direct voltages S 1 , S 2  (Figs. 1, 2 not shown) which are applied to rectangular pulse generators 1, 2 (Fig. 3) developing trains of duration modulated pulses p 1 , p 2  having widths proportional to instantaneous values a, c of voltages S 1 , S 2  given by a = k 1  + u, c = k 2  + i; the frequencies of the trains being interrelated in irrational ratio. The output of 1 energises 180‹ phase shifter 3, an input of coincidence multiplier 5 and an input of coincidence multiplier 7, while that of 2 energises 180‹ phase shifter 4, the other input of multiplier 7 and an input of coincidence multiplier 8. Phase shifted pulse trains p 3 , P 4  of widths proportional to instantaneous values b, d of voltages S 1 , S 2  given by b = k 1 -u, d = k 2 -i are developed, and p 3 , P 4  are applied to the inputs of coincidence multiplier 6, P 3  to an input of coincidence multiplier 8, and P 4  to an input of coincidence multiplier 7. The mean current outputs of the multipliers 5, 6 representing ac, bd are added at 9 and the mean current outputs of multipliers 7, 8 representing ad, bc are added at 10, and the output of 10 is subtracted from that of 9 at 11 and divided by 4. It is shown by mathematics that ui = <SP>1</SP>/ 4 [(ac+ bd)-(ad + bc)] = load power, and the result is integrated at 12 to develop a signal representing fui d t = load energy. The pulse generators may be controlled by comparison of the mean inputs and outputs of the phase shifter to maintain equality therebetween and thus to stabilise the duration of the rectangular pulses in absence of modulation at T/2, where T is the frequency of the appropriate pulse generator (Fig. 4, not shown). The phase shift may be applied to voltages S 1 , S 2  before pulse conversion, thus necessitating 4 pulse generators, one for each voltage and one for each phase shifted voltage.
Patent GB-170761-A (GB)
Title: Improvements in sweat bands for hats
IPC: A42C5/02
Filed: 1920-10-21
Abstract: 170,761. Hat Manufacturers' Supply Co., Ltd., Bartle, J. W., and Roberts, S. Oct. 21, 1920. Stitches and seams.-Perforations are formed in a strip of tape and the tape attached to the edge of a sweat band for hats in one operation. The tape A and leather B are fed together into an ordinary hemstitch sewing machine so that the binding stitches on the inner side of the perforations enter the edge of the leather. A second fabric forming a loop and containing an elastic or other cord may also be secured to the leather by the same stitches.
Patent GB-861903-A (GB)
Title: Automatic numeral wheel aligning mechanism
IPC: G06M1/06
Filed: 1959-09-01
Abstract: 861,903. Transfer mechanisms. VEEDERROOT Inc. Sept. 1, 1959 [Sept. 11, 1958], No. 29753/59. Class 106 (1). In a mimeral wheel counter having continuous transfer mechanism between the numeral wheels of lowest order, the transfer gearing is supported in a frame adapted for pivotal movement under the control of a cam attached to the lowest wheel, thereby to continuously adjust the lowest numeral wheel for reading, means being provided to inhibit such pivotal movement above a predetermined speed of rotation of the lowest numeral wheel. As described, an input shaft 14 carrying the lowest wheel 23 is rotated, a shaft 15 supporting the higher wheels being supported in the end of the shaft 15, bushings 16 allowing relative rotation of the two shafts. The higherorder wheels are connected by Geneva-type transfer mechanism. A snail cam 30 is mounted on the shaft 14 and co-operates with a cam follower 33 pivotally mounted at 22 and having a lateral pin 35 engaging the cam 30, the follower 33 being biased to engage the cam 30 by a spring 34. The follower 33 has a forked end whose slot engages a shaft 37 carrying transfer gears 26, 27, the shaft being mounted in a light pivotable frame 40. The shape of the cam 30 is such that the second lowest order wheel 19 moves rapidly from one numeral to the next. For high input speeds, the cam follower 33 cannot follow the cam 30 and means are provided that automatically disengage these two members when a predetermined speed is attained thereby preventing increasing wear on the parts. A disc 42 has an elongated hub 43 mounted on the shaft 14, a compression-spring 44 urging the disc 42 towards the cam 30. Movement of the disc 42, however, is prevented at low counter speeds by the engagement of pivoted weights 47, 48 which are spring-urged into engagement with the hub 43, but disengaged by centrifugal force when a predetermined counter speed is attained, the resulting axial movement of the disc 42 causing the periphery of the disc to lift the pin 35 on the cam follower 33 from engagement with the cam 30. When the counting- speed is reduced, the weights 47, 48 move inwards, bevelled edges 54, 55 thereon moving the disc 42 axially to its original position to allow the cam follower 33 and cam 30 to be re-engaged. Specification 765,027 is referred to.
Patent GB-248837-A (GB)
Title: Improvements in and connected with methods of and means for the telegraphic transmission of pictures, diagrams and other impressions
IPC: H04N1/06
Filed: 1924-12-11
Abstract: 248,837. Baker, T. Thorne-. Dec. 11, 1924. Copying-telegraphs.-To effect the movement of the picture-exploring device parallel to the axis of the rotary transmitting or reproducing drum, a wheeled support for the device carries a rotary knife-edged disc which engages a feedscrew rotating with the drum. The exploring device may be, at the transmitter, a stylus or a beam of light incident on a light-sensitive cell as described in Specification 249,021, and, at the receiver, a stylus contacting with a prepared surface for reproducing the picture electrochemically, or a beam of light incident on a photographic surface. The stylus g, contacting with the drum d, is carried by a spring- controlled lever o pivoted to an arm m fixed to a bar h provided with wheels running on a rail e parallel to the spindle of the drum, and the knife-edged disc l engaging a threaded portion d<2> of the spindle is mounted preferably at a slight inclination to accommodate the thread in the forked end of an arm k projecting from the bar h. The support carrying the disc l and the stylus g may be turned aside about the rail e when the stylus is not operating, e.g. when it is to be returned to its initial position, and a pin engaging a guard t then prevents disengagement of the wheels j from the rail. A weight n on the bar m assists to press the disc into engagement with the thread. The drum is driven through a friction or other clutch, pulley u, and belt v from a wound spring contained in a casing beneath the base-plate a, the spindle y for winding the spring projecting vertically through the plate a. Synchronous movements. - The receiving drum rotates slightly faster than the transmitting drum and carries an arm 1 which s arrested after each revolution by a stop 2 on the armature of an electromagnet 4, a spring catch being provided to prevent rebound of the arm. The spindle of the transmitting drum carries a cam which, during each revolution, closes a circuit over the line to operate at the receiving station a polarized relay which closes a circuit for energizing the magnet 4.
Patent GB-706902-A (GB)
Title: Improvements in or relating to photography
IPC: G03B17/52
Filed: 1947-11-10
Abstract: 706,902. Photographic film product and camera therefor. INTERNATIONAL POLAROID CORPORATION. Nov. 10, 1947 [Nov. 29, 1946], No. 29858/47. Classes 98(1) and 98(2) The product comprises a rupturable container holding a processing liquid mounted on a sheet support which may constitute an image receiving layer or may be provided with a silver halide photosensitive area, the container having a rupturable portion and a member so associated therewith as to be capable, on movement, of severing the rupturable portion. A second sheet and a leader connecting the two sheets may be present. The camera includes a magazine having means for positioning the sheets for withdrawal and means for engaging the severing member whereby the processing liquid may be released from the container. Except for the severing features the various materials and manner of use thereof are generally the same as those of Specifications 706,901 and 706,928. In Fig. 1 two of the products are in exposure position in magazine 10 which is itself within camera 48, and each product comprises photosensitive portion 24 and leader 26 by which, after exposure, the portion 24 may be drawn over the curved top 18 of a wall 16 to face a layer 28 to which is attached a container 30. Continued drawing by the leader 26 causes the severing member, shown as a piece of wire 60 attached at 62 to a rod 64 fixed within the magazine, to rupture the container 30 and to spread the processing liquid between the photosensitive portion 24 and layer 28 as these emerge from the magazine, when a positive image may be formed on the latter by the migratory transfer technique. The containers alone are described and claimed in Specification 706,963. Specification 658,740 also is referred to.
Patent GB-454894-A (GB)
Title: Improved toilet roll holder
IPC: A47K10/38
Filed: 1935-10-29
Abstract: 454,894. Roll-holders. ELLIOTT, F. F., 29, Greenway, Southgate, London. Oct. 29, 1935, No. 29876. [Class 18] A holder for a roll of toilet paper comprises a casing 7 and a roll spindle 11 which is placed in position by a movement in the direction of its axis and retained thereafter by a locking device at one end. The spindle is slid into position through the wall 2 of the casing until the end 10 of the spindle seats in a recess in the wall 3 and it cannot be withdrawn after the nose of a screw bolt 16 has been engaged in a groove 17. The bolt is situated in a tapped recess in the wall 2 and it is operated by a separate key which fits over the triangular sectioned lower end thereof. A drag roller 18 runs in recessed slots 20 in the side walls of the casing, one slot being closed at its upper end and the other being open to allow the roller to be inserted, after which the slot is closed by riveting a screwed pin in the hole 21<a>. The casing comprises a metal hood and it is suspended by keyhole slots 22 and screws passed through holes 23, access to these screws being obtained through holes 24 after the roll and its spindle have been removed.
Patent GB-960877-A (GB)
Title: Improvements in and relating to orthopedic footwear
IPC: A43B7/14
Filed: 1960-08-30
Abstract: 960,877. Orthopaedic footwear. SCHOLL MANUFACTURING CO. Ltd. Aug. 30, 1960 [Sept. 11, 1959], No. 29902/60. Heading A3B. An inner sole member 8 is provided with a set compound 15 having its upper surface shaped to the contour of the plantar surface of a human foot, the sole member being disposed within the shoe and shaped to form a moulding pan for the compound during manufacture of the shoe. A patient's bare foot is placed on the chalk dusted upper surface of the inner sole member 8 and an impression taken. The parts of the sole member indicating deformities are then relieved by grinding so that it accommodates the irregularities in the patient's foot, the inner sole member 8 being made of compressed cork. A sheet of aluminium foil 14 Fig. 6 or equivalent is cemented to this upper face and an overlap 20 is preferably pressed round the periphery of the inner shoe member. A compound of cork flour, ground cork, wood flour or fine sawdust and ground rubber is mixed and is applied on top of the aluminium sheet, the compound being subsequently covered with a thin impervious plastic film 21. The covered inner sole member is then placed on the floor and provided with a temporary wedge 23 of, for example, sponge rubber. The patient's foot is placed on the plastic film as shown in Fig. 6 and a downward pressure is applied to the knee when the patient is in a sitting position. The patient then stands and simulates a walking step by flexing his knees. The sole member and the film 21 is then removed and the compound allowed to partially dry, the edge 20 of the foil 14 being subsequently trimmed off. The compound is then covered with another thin film and the inner sole member replaced in the shoe so that the patient may wear them to perfect the impression. The thin film is subsequently removed and a cover of thin leather or monks cloth is cemented over the set compound. Where the inner sole member is used in a sandal it may become part thereof, the aluminium foil being preferably eliminated. The ankle portion 10 Fig. 3 of the shoe upper may be cut lower on the outer side of the shoe and the shoe is provided with an attached insole 5 a filler 6 a mid sole 3 and an outsole 1.
Patent GB-1268396-A (GB)
Title: Anhydrous calcium sulphate and calcium sulphate semihydrate
IPC: C04B11/26
Filed: 1969-06-12
Abstract: 1,268,396. Calcium sulphate. PROGIL, and CIMENTS LAFARGE. 12 June, 1969 [14 June, 1968], No. 29959/69. Heading C1A. A process for the continuous manufacture of calcium sulphate #-semihydrate or anhydrous calcium sulphate from crude synthetic gypsum comprises (a) subjecting the gypsum to a series of successive water washes by passing a sludge of the crude gypsum in water through a series of water cyclones, the underflow from each cyclone before the last being mixed with more water and passed to the next cyclone; recycling at least part of the overflow from the last cyclone; and filtering the underflow from the last cyclone (to obtain calcium sulphate dihydrate) with the proviso that at some step before filtering a basic compound, e.g. slaked line is added to neutralize the gypsum; and (b) dehydrating the dihydrate of (a) at 120-160‹ C. to obtain the #-semihydrate, or (c) to obtain the anhydride forming granules from a mixture of the dihydrate obtained in (a), calcium sulphate #-semihydrate and water, and calcining the granules at 400‹ C. or more. The #-semihydrate of (c) may be that obtained in (b), and preferably the granules are formed from 40- 10% by weight of the semihydrate and 60-90% of the dihydrate, with water. Calcination of the granules at 400-600‹ C. yields an anhydride suitable for use in construction plasters, or calcination at 600-900‹ C. yields an anhydride suitable for use in normal or rapid setting cements. Step (a) may be conducted at ambient temperature and preferably there are two sets of cyclones in the series (i.e. two wash stages) and the filtrate is recycled to the last cyclone.
Patent GB-877987-A (GB)
Title: Methods of compressing fluids with centripetal compressors
Inventor: PAVLECKA VLADIMIR HENRY
IPC: F04D17/02
Filed: 1957-09-24
Abstract: 877,987. Centripetal compressors. AMERICAN MACHINE & FOUNDRY CO. Sept. 24, 1957, No. 29986/57. Class 110 (1). In a centripetal compressor, the local relative Mach number at entry to the nth stage is kept within Œ0.3 of that at entry to the first stage, n being not less than 4. To permit the local Mach number at entry to the second stage of a contra-rotating centripetal compressor to be made equal to that at entry to the first stage, i.e. to permit the respective relative entry velocities to be made equal, the blading is so formed that the peripheral component of the absolute exit velocity from a stage is greater than that of the relative exit velocity. In addition, the rotor carrying the second stage may be driven at a greater angular speed than the oppositely rotating rotor carrying the first stage so that the outer peripheral velocities of the first and second stages are equal. A stator may be interposed between the first and second stages to turn the flow towards the radial direction so as to reduce the peripheral component of the absolute velocity before entry to the second stage and also to reduce the absolute velocity somewhat by diffusion or by supersonic compression shocks. In addition, the outer peripheral velocity of the second stage may be made greater than that of the first stage. This allows the equality of entry Mach numbers to be extended to the first four stages. This equality can be extended to at least the fifth stage by inserting a further stator between the second and third stages. Instead of being provided between contra-rotating stages, the stator or stators can be provided between co-rotating stages, subsequent stages being contra-rotating. Alternatively, the first stator is provided between co-rotating stages and the second stator is provided between contra-rotating stages. This latter arrangement is shown in Fig. 16. Stator blading 1600 provides counter-whirl at entry to the first stage 1601 of rota blading. Whirl-reducing stator blading 1602 and 1604 are respectively provided between co-rotating blading 1601 and 1603 and contra-rotating blading 1603 and 1605. Blading 1605 to 1610 are contrarotating. The rotor 1616 carrying blading 1605, 1607 and 1609 is rotated at a higher angular velocity than the rotor 1614 carrying blading 1601, 1603, 1606, 1608 and 1610, so that the peripheral velocity of blading 1605 is equal to that of blading 1601. This arrangement permits the entry Mach number to remain constant through all the stages except 1610. Additional stator blading may be provided between blading 1605 and 1606 and between blading 1606 and 1607. The compressed-air flows through the hollow rotor shafts. Specifications 743,475 and 877,988 are referred to.
Patent GB-159608-A (GB)
Title: Improvements in or relating to tyres for the wheels of vehicles
IPC: B60C11/14
Filed: 1919-12-02
Abstract: 159,608. Cooper, J. R., Lockhart, T. E., and Osler, R. H. Dec. 2, 1919. Tread bands, projections, and surfaces.-Tyres, treads, &c. are made of a composition consisting of 25-40 per cent raw or reclaimed rubber or mixtures, and 75-60 per cent carborundum or a mixture of carborundum and other abrasives, with sufficient sulphur for vulcanizing. The carborundum is preferably of the fineness known as CC., or 20, 24, or 30 grit. Solid tyres or covers may be made of the composition or it may be applied to the surface by moulding &c., or in the form of a band.
Patent GB-346315-A (GB)
Title: Improvements in or relating to adjustable pedestals for chairs and the like
IPC: A47C3/24
Filed: 1929-10-03
Abstract: 346,315. Chairs. SOC. ANON. PROFUMERIE SATININE USELLINI & CO., 23, Via Broggi, Milan, Italy. Oct. 3, 1929, No. 30019. Convention date, Oct. 4, 1928. Void [Published under Sect. 91 of the Acts]. [Class 52 (ii).] Means for vertically adjusting the seat of a chair comprise a fixed cylinder 1,2, carried by the legs, and carrying an internal-threaded column 3 with which engages a hollow cylinder 5 carrying a hand-wheel 6. A second hollow cylinder 8, which carries the seat proper, is provided with a projection 9 engaging a longitudinal key-way 10 in the column 3 and with an annular groove 11 engaged by a screw 12 on the cylinder 5. On turning the hand-wheel, the member 8 is raised or lowered without rotating. A spring 7 and a bearing 13 may be provided.